# name : ggplot2 scale_shape_manual
# key : ggplot2.scale_shape_manual
# key : scale_shape_manual#ggplot2
# contributor : Shuguang Sun
# --
scale_shape_manual(values = c(unicode[["arrow"]], # Add shapes
                              unicode[["circle"]],
                              unicode[["square"]]),
                      labels = c("$0")) +
